const mysql = require("mysql")

var con = mysql.createConnection({
    host: '192.168.16.144',
    port: 3306,
    user: 'root',
    password: 'ddd',
    database: 'mydatabase'
})
var userName = process.argv[2];
var age = process.argv[3];
var updateSql = "update users set age=? where userName=?";

con.query(updateSql, [age,userName], (err,result)=>{
    if(err){
        console.log(err)
    }else{
        console.log(result)
    }
})
